M 4.6 earthquake: South Pacific Ocean (Tonga) — December 18, 1987

M 4.6 earthquake: South Pacific Ocean (Tonga) — December 18, 1987. Epicenter 475 km W of Nuku'alofa, depth 593 km, 23:14 Local (1987-12-19 11:14 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

South Pacific Ocean (475 km W, Tonga) — -22.199, -179.678

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